To ask an object to perform a service, another object must ________ that corresponds in both substance and form to the method that provides the service.
A) provide a method
B) send a flow
C) send a message
D) provide a service

Question

Quizplus · Accepted Answer

Sending a message to an object is the way to ask it to perform a service, as it corresponds to invoking a method on that object which provides the desired service.

To Ask an Object to Perform a Service, Another Object